feat: Upgrade to Astro with full PDPA compliance

PDPA Features:
✅ Cookie consent banner
✅ Consent logging API
✅ Admin dashboard
✅ Privacy Policy
✅ Terms & Conditions

Technical:
✅ Astro 5.x + Tailwind v4
✅ Docker on port 80
✅ SQLite database
✅ 15 pages built

Ready for Easypanel deployment.

node_modules/mdast-util-to-markdown/lib/handle/blockquote.js

@@ -0,0 +1,29 @@
+/**
+ * @import {Blockquote, Parents} from 'mdast'
+ * @import {Info, Map, State} from 'mdast-util-to-markdown'
+ */
+
+/**
+ * @param {Blockquote} node
+ * @param {Parents | undefined} _
+ * @param {State} state
+ * @param {Info} info
+ * @returns {string}
+ */
+export function blockquote(node, _, state, info) {
+  const exit = state.enter('blockquote')
+  const tracker = state.createTracker(info)
+  tracker.move('> ')
+  tracker.shift(2)
+  const value = state.indentLines(
+    state.containerFlow(node, tracker.current()),
+    map
+  )
+  exit()
+  return value
+}
+
+/** @type {Map} */
+function map(line, _, blank) {
+  return '>' + (blank ? '' : ' ') + line
+}